game.h

体现了lod(level of detail)算法 包括网格细分,空间层次

#ifndef _GAME_H
#define _GAME_H



/* Type definitions */
typedef struct
{
	float XPos;
	float YPos;
	float ZPos;
	float XZAngle;
	float YZAngle;
	float XYAngle;

	float speed;
	float radius;

	int timeStamp;
} g_gamestate_type;

typedef struct
{
	int xPos;
	int yPos;
	int buttons[4];	//Mouse buttons 0-3
} in_mouseState_type;


/* Global variables */
extern in_mouseState_type in_mouseState;


/* Function prototypes */
int inSetup(HINSTANCE hinst, HWND hWnd);
void inShutdown();
void inRead();
int inIsKeyPressed(int key);

bool GetKey(int virtKeyCode);
bool frcam_create();
void frcam_update();
void frcam_motion();
void drawFrustum(float x_pos, float y_pos, float z_pos, float XZAngle, float fov);

void DrawAlignes(g_gamestate_type *g_current);

/* Global variables */
extern g_gamestate_type g_current;
extern g_gamestate_type g_previous;
//extern int g_tenFrames[];
extern float g_maxSpeed;
extern float g_acceleration;
extern float g_maxTurnRate;

/* Function prototyes */
int gSetup();
void gShutdown();
void gUpdate();
void gNewGameState(g_gamestate_type *newState, const g_gamestate_type *oldState);


#endif //_GAME_H